is chris christie right? this is make or break for mitt romney? >> i think he's got more at steak than obama. it's one of his last shots. >> jeanne cummings, as you're watching this back and forth, do you expect a confrontational debate or a polite exchange? >> based on what the reporting shows and the preparation of the romney campaign, they are looking to bring the game to president obama. he has to do offense and defense, very tricky in the first debate, and i think he's well prepared. he may surprise some people. >> mark, i want you to talk to me about all of the national polls we have gotten in the last 24 hours. cnn, politico, abc post, they all have something in common. what are we seeing here that's good for obama and what are we seeing here that's good for romney? >> what's good for obama is he's hitting 50%, where you need to be. if obama wins, it's going to be with numbers like those. if i'm mitt romney, i'm liking the fact the race is tightening a little bit. the question is whether this is natural tightening or is mitt romney really m